From: Kieran Bingham <kieran@ksquared.org.uk>
To: Wolfram Sang <wsa@the-dreams.de>,
Lee Jones <lee.jones@linaro.org>,
Kieran Bingham <kieran@ksquared.org.uk>
Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
Javier Martinez Canillas <javier@osg.samsung.com>,
sameo@linux.intel.com
Subject: [PATCHv7 08/11] i2c: match vendorless strings on the internal string length
Date: Mon, 7 Nov 2016 12:47:43 +0000 [thread overview]
Message-ID: <1478522866-29620-9-git-send-email-kieran@bingham.xyz> (raw)
In-Reply-To: <1478522866-29620-1-git-send-email-kieran@bingham.xyz>
If a user provides a shortened string to match a device to the sysfs i2c
interface it will match on the first string that contains that string
prefix.
for example:
echo a 0x68 > /sys/bus/i2c/devices/i2c-2/new_device
will match as3711, as3722, and ak8975 incorrectly.
Correct this by using sysfs_streq to match the string exactly
Signed-off-by: Kieran Bingham <kieran@bingham.xyz>
---
Changes from v7
- strncasecmp usage converted to sysfs_streq
drivers/i2c/i2c-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index c338c8f3b3db..8b93a262e237 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1810,7 +1810,7 @@ i2c_of_match_device_sysfs(const struct of_device_id *matches,
else
name++;
- if (!strncasecmp(client->name, name, strlen(client->name)))
+ if (sysfs_streq(client->name, name))
return matches;
}
--
2.7.4
next prev parent reply other threads:[~2016-11-07 12:48 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-07 12:47 [PATCHv7 00/11] i2c: Relax mandatory I2C ID table passing Kieran Bingham
2016-11-07 12:47 ` [PATCHv7 01/11] i2c: Add pointer dereference protection to i2c_match_id() Kieran Bingham
2016-11-07 12:47 ` [PATCHv7 02/11] i2c: Add the ability to match device to compatible string without an of_node Kieran Bingham
2016-11-07 12:47 ` [PATCHv7 03/11] i2c: Match using traditional OF methods, then by vendor-less compatible strings Kieran Bingham
2016-11-07 12:47 ` [PATCHv7 04/11] i2c: Make I2C ID tables non-mandatory for DT'ed devices Kieran Bingham
2016-11-07 12:47 ` [PATCHv7 05/11] i2c: Export i2c_match_id() for direct use by device drivers Kieran Bingham
2016-11-07 12:47 ` [PATCHv7 06/11] i2c: Provide a temporary .probe_new() call-back type Kieran Bingham
2016-11-07 12:47 ` [PATCHv7 07/11] i2c: match dt-style device names from sysfs interface Kieran Bingham
2016-11-07 19:10 ` Javier Martinez Canillas
2016-11-14 22:27 ` Wolfram Sang
2016-11-15 9:48 ` Kieran Bingham
2016-11-07 12:47 ` Kieran Bingham [this message]
2016-11-07 19:12 ` [PATCHv7 08/11] i2c: match vendorless strings on the internal string length Javier Martinez Canillas
2016-11-14 22:27 ` Wolfram Sang
2016-11-15 9:49 ` Kieran Bingham
2016-11-07 12:47 ` [PATCHv7 09/11] mfd: 88pm860x: Move over to new I2C device .probe() call Kieran Bingham
2016-11-07 19:13 ` Javier Martinez Canillas
2016-11-07 12:47 ` [PATCHv7 10/11] mfd: as3722: Rid driver of superfluous I2C device ID structure Kieran Bingham
2016-11-07 19:20 ` Javier Martinez Canillas
2016-11-07 22:05 ` Kieran Bingham
2016-11-08 2:02 ` Javier Martinez Canillas
2016-11-07 23:09 ` Wolfram Sang
2016-11-08 2:14 ` Javier Martinez Canillas
2016-11-07 12:47 ` [PATCHv7 11/11] [TESTPATCH] rtc: convert ds1307 to interim probe_new Kieran Bingham
2016-11-13 18:26 ` [PATCHv7 00/11] i2c: Relax mandatory I2C ID table passing Wolfram Sang
2016-11-17 21:15 ` Wolfram Sang
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